Machine Roller Kit, Load Capacity 16,000 lb, For Surface Type Any Surface, For Movement Type Swivel/Rigid, Top Plate Length 5 7/8 in, Top Plate Width 5 7/8 in, Top Plate Surface Rubber Padded, Top Plate Type Swivel with Lock, Caster/Roller Configuration (4) Rollers, Frame Material Steel, Number of Decks 1, Overall Length 58 1/2 in, Overall Width 5 7/8 in, Overall Height 5 in